Clock Wave

Shown for US

• Price: $1.99

Last verified 31 Jul 2026

Shown for US

4.7 247 ratings · App Store

1. 5/5Absolutely Works!!!

   I downloaded this very skeptical!! Already expecting it not to work! Because it makes sense right how can a phone that can only transmit sound set a clock that receives radio signals! I don’t know how this works but it truly does! However you have to hold your clocks receiver close to the speaker on your phone with the volume all the way up! Then be patient it after you start a manual receive your signal reception will show very strong then just minutes later you will have a set clock! It’s really pretty amazing!!! The key to this working is keeping the clock your setting close to you phone while your transmitting!! Otherwise it won’t work!! You can’t believe those that say it doesn’t work because it really does!!

   tatman1982 · 31 Jul 2026

2. 5/5Converted skeptic

   I was doubtful of how clicking sounds from a speaker would simulate radio signals but bought the app anyway. I tried the app with a Lacrosse atomic clock that can’t receive a WWVB signal unless it was by a west facing window. It didn’t work so I was all set to give a 1 star scam rating and review. I decided to try it again but this time I aligned the speaker with the back of the clock and turned up the iPad volume. When I looked five minutes later the signal received icon was showing on the clock and it was synchronized with the correct time, having been 12 seconds slow before. Now I have to find how why and how this works

   papachungo13 · 31 Jul 2026

3. 5/5Works but can take some time to find the best setup.

   Can confirm works on a Citizen AT6080. If you have trouble - I think the signal transmission is from the coupling of the coils in the speakers to the receiver in the watch, rather than the sound. So just because you can hear the noise, doesn’t mean your watch is properly aligned. I have a Citizen AT6080 and just aligning it with my iPhone speakers doesn’t work. I had to take a pair of over the ear headphones and put the case between the two speakers (facing the speaker coils). It takes 10 mins or so to work but is able to consistently update.

   C-Southard · 31 Jul 2026

4. 5/5It really WORKS!!!! This one, not the free one

   CLOCK WAVE is the one to get. Worth the 2 bucks. First attempt it worked perfectly with Casio 5161 moduled watch 12 o’clock positioned next to iPhone speaker. I tried the other app that was free but had a paid upgrade and I tried it a 100 different ways with iPhone speaker, Bluetooth speaker, headphones over an hour I wasted and it never worked. Get this one. It worked first try in a medium noisy public environment. I want to send them an extra $2 as a tip because this actually works without wasting any time. My thanks to the developer.

   Just a Bus Driver · 31 Jul 2026

5. 5/5Simply amazing and works

   Let me preface this review by saying I have never written a review before on the App Store. I downloaded this app because the atomic time sync on my watch never captured the signal from the atomic clock in Fort Collins due to interference from walls, electronics, and modern technology that is all around us. This App made syncing my watch to the atomic clock as simple as hitting the “transmit button.” My watch synced to the clock within 2 minutes and I was done. Simply amazing and highly practical for people not close to the atomic tower anywhere in the world whether it be in the USA or Europe or Asia or anywhere else for that matter. Bravo!

   DeweyDavis · 31 Jul 2026

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